Welding and soldering torch.



A. IWEStH. WELDING AND SOLDERING TORCH.

APPLICATION FILED IuNEzs, I9II.

Patented. Jan. 30,1917.

.AIDOLF MESSER, FRA/NKFOBT-ON-THE-MAIN, GERMANY.-

WELDING ANI) SQLDERING TORCH.

To all 'whom t may concern Be it known that I, ADOLF MESSER, a subject of 'the Emperor of Germany, residing in the city of Frankfort-on-the-Main,Empire of Germany, have invented certain new and usefullmprovements in Welding and Soldering Torches, of which the following is a full, clear, and exact specification.

It is well known that in welding and soldering burners, which are actuated with oxygen and some suitable heating gas, the proper mixing of these gases not only involves economy, but conservation of the parts being welded. The noxious iniuence of the unmixed gases, willv in most cases cause a burning of the metals being welded. The' small dimensions of the welding and soldering burners, more particularly of thev orifices in the burner tube which is situated in front of the oxygen nozzle, render it Very diiicult toplace a really good and eiiicient mixing contrivance proportionate to the large consumption of gas by the burners.

The mixing chamber forming a part of this present improvement elects in the simplest manner an absolutely certain mixing of the gases to ybe used, notwithstanding the small dimensions referred to, without placing any considerable obstacles in theway of the iow of the' gases and without any material change in the external dimensions of the burner tube. The latter can also be taken out at pleasure whenever it is required for the purpose of cleaning it. lTo effect an intimate Amixture of the entering iuids, l

provide an interrupter positioned in the mixing chamber. This interrupter causes a disintegration and `breaking up of the streams or eddies of the current and a more intimate commingling of the particles so that thorough mixture is obtained. To further increase the useful effect of the mixing, a screw thread may be suitably cut into vthe 4orifice of the mouth piece of the burner, in

addition to the mixing contrivance mentioned above, the gyrations of the screw thread effecting a spiral movement of the gas.

In the drawings accompanying `and forming a part of thisl speciication, Figure 1 is a longitudinal sectional view of one form of burner, Figs. 2, 3, and 4 are longitudinal sections of the mixing chamber portion and show various devices for effecting the mixture of the gases. v

Specification of Letters Patent. Application led June 29, 1911. Serial No. 636,113.`

Patenten aan. so, wie.,

The handle portionv of the burner comprises a tube l. A coupling head 2 vis secured tothe tube 1. The head 2 is shown having an integral tube 3 disposed within the tube 1. Between the tubes 1 'and 3 lis a gas space to be supplied with thev heating gas through a connection 5. The interior 6 of tube 3 will be supplied with oxygen y through connection 7.l A single valve 8 is employed for controlling both gases. As these gases arenever under the same degree of pressure, it sometimes happens, that, when the Valve key becomes loose'on its seat and consequently leaky, the gases get into connection with each other prior to arriving in the mixingnozzle. Thus the gases could commingle and return into the gas feeding pipes. Thereby is the operation of the burner not only impaired, but the danger of explosion established. These drawbacks are obviated in the present improvement by the valve 8 being provided Iwith av groove 9 which is in communication with the external air through a channel 10. Hence, when the valve is leaky, the gas' being underhigh pressure is allowed to escape through this channel without any danger and without being able to reach the container for the gas which is undei` low pressure.

The tube 3 is shown ending in a nozzle 11, which nozzley is surrounded by a conical chamber 12 formed by the .rear face of the nozzle 13, embodyingthe elongated tip portion 13a formed from a single piece of material. The apex of the conical chamber 12 is shown in alinement with the orifice of the nozzle 11, and from which apex extends a gradually enlarging channel 14. The channel 14 opens into the mixing chamber 15. A channel 16 leads from. the mixing chamber 15 to the ultimate oriice 17 at the burner tip. Within the mixing chamber is shown a mixer 18 which in Fig. 1 is in the form of a spiral spring, the convolutions being of gradually decreasing radius. from each end toward the center. The gases will be caused to pass through the mixer twice' in the pasi ing the gas currents and with the mixer effecting a complete mixing of the two gases. l

Tn 3 the mixer`is shown in the form of a wire netting tube 20 constricted at its central portion.Y f

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, by the burner tube, instead of being made in the hitherto usual heavy construction with cooling ribs, being constructed in as light a fashion as possible so as to o'er as small a surface as possible to the heat radiating from the welding point, and the burner tube is made as long as feasible and from a metal that has a high rate of ther'- mal conductivity, such as copper; this serves the purpose of conducting the heat produced at the tip of this tube toward the oxygen nozzle 11. The cooling of the burner tube is then effected from the interior Aby the coldgas mixture flowing in.

The object of forming the nozzle long and with a thin wall and of metal having great conductivity is, to facilitate the dissipation of heat generated at the end thereof. It will be apparent that as the metal is thin and of increased surface due to length, no considerable amount A of heat will be stored up therein, but that the same will be quickly conducted .along the pipe and dissipated into the atmosphere at points throughout its surface.

Having thus described my invention I claim:

1. In a welding and soldering burner, anfelongated nozzle embodying a tip portion formed from a single piece of metal of high thermal conductivity and provided with a central passage, one portion of said passage being enlarged to form a mixing chamber, an interrupting elementextending the length of the chamber removably mounted ing the free ends 'of said element.

2. In a welding and soldering burner a nozzle embodying. an elongated tip portion formed from a single piece of metal of high thermal conductivity, said nozzle having a mixing chamber at one end thereof, a yieldable interrupting element removably mounted therein and extending substantially the length of the chamber, engaging stops formed on the inner wall of said tip portions alld'arranged to engage the ends of said interrupting element for maintaining the saine in operative position 4withinl said chamber.

3. A weldingand lsoldering burner embodying a nozzle having an elongated tip portion formed from a single piece of metal of great thermal conductivity, the wall of said tip portion being substantially thin in cross section, a mixing chamber in proximity to one end of said nozzl'eand a mixing device removably positioned -within said chamber.

4f. A welding and soldering burner embodying a nozzle having an elongated onepiece tip portion in the form of a pipe vand containing a mixing chamber, the wall of said nozzle being substantially thin in cross section and made -,of copper, and a mixing device positioned in said mixing chamber.

5. A welding and soldering burner embodying a nozzle having an elongated onepiece tip portion and containing a mixing chamber, the wall of said nozzle being substantially thin in cross section. and made of a metal of high thermal conductivity and a yieldable mixing device removably positioned in said mixing chamber.

In witness whereof I have hereunto set my hand in the presence of two subscribing therein, and positioning means for. engagwitnesses.

AnoEF MESSER.

Witnesses JOSEPH BRAELLESBACH, CHAS. LYON RUSSELL. 

